Chemistry: physical processes – Physical processes
Patent
1984-10-11
1987-05-05
Lacey, David L.
Chemistry: physical processes
Physical processes
241 1, 241 74, 422270, 422272, 422273, 422276, 210174, B01D 1102
Patent
active
046628932
ABSTRACT:
A method and apparatus for hydraulically macerating and recovering soluble component from a solid material such as waste solid propellant that is semihard. The solid material is fed into a perforated enclosure where it is held until it is macerated such that it can pass through perforations in the enclosure. While held in the enclosure, the solid material is agitated and exposed to jets of liquid solvent under a pressure which is equal to at least about 1000 psig to thereby macerate the solid material and force it through the perforations and to dissolve soluble component such as ammonium perchlorate from solid propellant. In one embodiment, the propellant residue is conveyed to a residue discharge end of the apparatus by a sloping helical conveyor. The helical conveyor provides individual contact stages for counter-current extraction and washing of ammonium perchlorate from the residue with recycled solvent.
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Lacey David L.
Morton Thiokol Inc.
Simmons James C.
White Gerald K.
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